Home / 18,889.50-28,330.60-7,199.99

Finding the Fourth Proportional to 18,889.50, 28,330.60 and 7,199.99

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Solution

The fourth proportional to 18,889.50, 28,330.60 and 7,199.99 is: 10,798.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889.50 : 28,330.60 = 7,199.99 : x
  2. Step 2: Convert to fraction form
    18,889.50/28,330.60 = 7,199.99/x
  3. Step 3: Cross multiply
    18,889.50x = 28,330.60 × 7,199.99
  4. Step 4: Simplify right side
    18,889.50x = 203,979,895.04
  5. Step 5: Solve for x
    x = 203,979,895.04/18,889.50
  6. Step 6: Final answer
    x = 10,798.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.